Would that be the 'Nobel prize winner' Dr Mann, who massaged the so-called hockey stick data leading to all this climate change/global warming hysteria in the first place? Hardly a credible source of anything IMHO.
"Climategate" was reviewed extensively by numerous organizations and no wrongdoing was found. https://en.wikipedia.org/wiki/Climatic_Research_Unit_email_c...
By the way, Mann was forced to stop calling himself a 'Nobel Prize recipient', after it was found out that he wasn't directly awarded the prize; it was awarded to the IPCC.[2]
[1] https://wattsupwiththat.com/2017/03/29/reflections-on-mark-s...
[2] http://www.nationalreview.com/corner/331738/michael-manns-fa...